OpenAI confirms an Agents API container billing bug
A Reddit user reported a $1,600 Agents API bill. OpenAI confirmed container overbilling. I separate the resolved incident from the cleanup work apps need.
Hands-on notes on AI and software development
Model releases, benchmarks, experiments and guides for developers who work with AI every day. Written from real use, with sources for every claim.
GLM improved its inference. Engineers still set the goal
Z.ai reports 3× serving throughput with help from a GLM coding agent. I examine what improved, what humans controlled, and what developers can reuse.
GPT-6 Sol and Luna: the price cut is the upgrade
GPT-6 Sol and Luna cut API prices while independent benchmarks show smaller gains. I compare the scores, ChatGPT access, and mixed first reports on Reddit.
Opus 5.5 improves coding. Task cost is less clear
Opus 5.5 gains ground in independent coding tests and cuts token prices. I compare the task costs, effort settings, and first Reddit reports on daily use.
Claude leads 26% of AI R&D at Anthropic. Who checks it?
Anthropic says Claude leads a quarter of its AI research work under human supervision. I look at what the figure measures and who still checks the results.
Codex CLI adds voice. The recovery fixes matter more
Codex CLI 0.155 adds experimental voice and safer worktree cleanup. I explain the fixes for lost prompts, restarted sessions and the next-day hotfix.
Fable 5.2 rumors: better answers need better evidence
Reddit users suspect a hidden Fable upgrade. I traced the claims to their sources and checked what would actually establish a new Claude model release.
Claude Code weekly limits fell 16.7%. Here's why
Claude Code's promotion ended on 14 September. I explain the smaller weekly allowance, the 25% versus 16.7% calculation and what five-hour warnings mean.
DeepSeek V4.1 Flash: low API prices, huge open weights
DeepSeek V4.1 Flash activates 8B parameters on input, but its full weights are enormous. I explain the API prices, coding scores and server requirements.
OpenAI Agents API: what the Codex harness takes over
OpenAI now hosts the Codex agent loop for your application. I explain how the Agents API differs from the SDK, what persists and which costs remain.
GPT-6 Astra costs 2.5x Sol per token. It talks like a person
OpenAI's GPT-6 Astra is metered at 2.5 times Sol's rate and feels more human in conversation. I checked the limits, the benchmarks, and the first reactions.
Muse Spark 1.3 sat above GPT-6 for two days. Here's why
Muse Spark 1.3 scored 62 on Artificial Analysis, above GPT-6 Astra, then fell to ninth in a rescore. I traced where the score came from and what it costs.
All articles
Releases
- OpenAI confirms an Agents API container billing bug
- GLM improved its inference. Engineers still set the goal
- GPT-6 Sol and Luna: the price cut is the upgrade
- Opus 5.5 improves coding. Task cost is less clear
- Claude leads 26% of AI R&D at Anthropic. Who checks it?
- Codex CLI adds voice. The recovery fixes matter more
- Fable 5.2 rumors: better answers need better evidence
- DeepSeek V4.1 Flash: low API prices, huge open weights
- OpenAI Agents API: what the Codex harness takes over
- GPT-6 Astra costs 2.5x Sol per token. It talks like a person
- Fable 5.1 beats Fable 5. Opus is harder to replace
- Codex Plus can stop work with 84% of weekly usage left
- Claude will watermark its text. The EU is the reason
- Astra is real. A GPT-6 launch this week is not
- Codex resets were a marketing stunt. The problem was real
- DeepSeek V4 Flash lost all 9 benchmarks to Opus 4.8
- Opus 5 is a great employee but a frustrating boss
Benchmarks
Experiments
Guides
- Claude Code weekly limits fell 16.7%. Here's why
- Opus 5 is not as bad as the internet says
- Cursor didn't remove the IDE. Here's how to get it back
- OpenAI's agents turned Artifactory into a message board
- Which merchant of record should you trust? I compared 9
- How founders get their first 1,000 users without ads
- My coding agents forget the repo. I built them a map
- I compared eight Convex alternatives. I'm not switching